Charles e



no Model.) E GOULD- BOB SLEIGH.

No. 544,221. Patented Aug-6; 1895.

attorney tlN i'ran TATES PATENT Fries.

CHARLES E. GOULD, OF FREMONT, MICHIGAN, ASSIGNOR OF ONE-HALF TO GEORGE TATE, OE SAME PLACE.

BOB-SLEIGH.

SPECIFICATION forming part of Letters Patent No. 544,921, dated August 6, 1895. i Arpliwtionfileq r 4. 1896. Serial No. 544.473. ma

To all whom Iii-may concern: bar and on a line below the castings B are at- Be it known that I, CHARLES E. GOULD, a tached castings having side projections, citizen of the United States of America, residwithapertures which register with the apering at Fremont, in the county of Newaygo' and tures in the castings above, the apertures be- 5 State of Michigan,have invented certain new ing connected by apertures through the crossand useful Improvements in a Self-Supportbar so that both castings are secured to the ing Knuckle to be Used in the Construction of cross-bar by the same bolts. The castings C Bob-Sleighs; and I do hereby declare the folare provided with a depending bearing-surlowing to be a full, clear, and exact description face having a central concave recess 0 form IQ of the invention, such as will enable others ing semicircular bearing-surfaces c, which skilled in the art to which it appertains to make are rounded as shown, the sides tapering off to and use the same, reference being had to the the projecting sides hereinbefore referred to.

accompanying drawings, and to letters of ref- D designates a casting which is secured to erence marked thereon, which form a part of the upper edge of the runner and is provided 15 this specification. with a semicircular recess or bearing-surface The object of my invention is to provide an to correspond with the bearing-surface of the efficient coupling between the runner and casting O, the casting D having a central web cross-bar of the sled, by means of which the or projection 01, from which the bearing-surrunner will be permitted to have a rocking face rounds off as shown, so that when the 2o movement so as to adjust itself to the inequaliparts O and D are placed in engagement with ties of the road; and the invention consistsin each other lateral movement will be preproviding the cross-bar of a bob-sled on its Vented. upper side with a casting having a convex E designates what I term the rave, which upper surface with which a bar attached to consists of a bar bent to present inclined 25 the runnerengages, the under side of the crossmembers connected by a horizontal portion,

bar having attached thereto a casting proas shown. The ends of this bar or rave are vided with depending bearing-surfaces and a rigidly bolted to the runner, and when the central recess which engage a casting shaped parts of the knuckle-joint are placed in posito receive the same, the latter casting being tion the horizontal portion of the bar or rave 30 secured to the upper edge of the runner, the bears upon the casting B, thus holding the parts being held in place by a bar or rave, parts O and D securely in position by fricwhich is bolted at its ends to the runner, all tional contact. Then the parts are thus conas will be hereinafter fully set forth and parnected the complementary bearing-surfaces ticularly pointed out in the claim. of the parts C and D are in engagement with 5 In the accompanying drawings, forming each other, so that they can rock in the direcpart of this specification, Figure l is a pertion'of the runner and the bar or rave E will spective View showing the parts in position prevent displacement, I for use. Fig.2 is a perspective view showing By the construction hereinbefore described the parts separated, and Fig. 3 is a sectional the center of the rocking movement is at a 0 View. point adjacent to the under side of the cross- Adesignates the bolster, which is connected bar, thus positioning the center of movement to the cross-bar B in the usual manner-that very high up, so that in practice there will be is to say, by means of a king-bolt-bearinga comparatively small range of movement beplates being interposed between the bolster tween the crossbar and upper part of the bar 5 4 5 and cross-bar. To the upper side of the crossor rave E.

bar, and near the ends thereof, are secured I am aware that prior to my invention it has castings B, said castings having a convex been proposed to connect the runners ofabob bearing surface I), upwardly-projecting side sled to the cross-bar by means of suitable fixflanges b, and beyond the flanges projections tures to allow a rocking movement of the run- 50 which are apertured for the passage of the conners with respect to the. cross-bar, and I do necting-bolts. To the under side of the crossnot therefore claim such invention broadly;

but as far as I am aware the castings or fixtures heretofore used have been connected by bolts which pass through slots or elongated openings.

I am also aware that runners have been connected to the cross-bar so as to have a sliding movement thereon, the parts being held together and against vertical displacement by means of long bolts placed at the front and rear of the knee and connected to a bar which extends over the cross-bar and is attached to the runner.

I am also aware that it has been proposed to connect the runners and cross-bar by a joint which is coupled by means of a transverse bolt.

\Vhat I claim as new, and desire to secure by Letters Patent, is

A knuckle-joint for sled knees consisting of castings B and 0 having convex recesses to provide bearing surfaces having side walls and projections with apertures which register with each other so that both castings are secured to the cross-bar by the same bolts, a casting D having side bearing surfaces and a central web 01 which are complementary to the bearing surfaces and recesses of the casting 0 attached to the under side of the cross-bar, and a bar or rave E having a horizontal portion which engages with the convex bearing surface of the casting Bfisecured to the upper side of the cross-bar, the ends of the bar or rave being attached to the runner, substantially as shown, whereby the bar'or rave holds the parts in engagement with each other, for the purpose set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES E. GOULD. Witnesses:

CHAS. E. ROUNDS, WALTER E. FULLERTON. 

